Tea Consumption and Depression from Follow Up in the Singapore Longitudinal Ageing Study

Tea Consumption and Depression from Follow Up in the Singapore Longitudinal Ageing Study

Objectives Experimental evidence suggest that tea polyphenols have anti-depressant effect and tea consumption may reduce the risk and severity of depression. We investigated whether tea consumption was associated with changes in depressive symptoms over time among Asian older adults. Design Populati...

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Published in:The Journal of nutrition, health & aging Vol. 25; no. 3; pp. 295 - 301
Main Authors: Ng, Tze Pin, Gao, Q., Gwee, X., Chua, D. Q. L.
Format: Journal Article
Language:English
Published: Paris Springer Paris 01-03-2021
Springer Nature B.V
Subjects:
Aged
Aging
Cohort Studies
Depression - drug therapy
Female
Follow-Up Studies
Geriatric psychology
Geriatrics/Gerontology
Humans
Longitudinal Studies
Male
Medicine
Medicine & Public Health
Mental depression
Neurosciences
Nutrition
Older people
Primary Care Medicine
Prospective Studies
Quality of Life Research
Singapore
Tea
Tea - chemistry
Singapore
black
tea
polyphenols
Depression
green
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Summary:Objectives Experimental evidence suggest that tea polyphenols have anti-depressant effect and tea consumption may reduce the risk and severity of depression. We investigated whether tea consumption was associated with changes in depressive symptoms over time among Asian older adults. Design Population-based prospective cohort study with mean 4 years of follow up. Setting Singapore Longitudinal Ageing Study (SLAS) of community-living older persons. Participants 3177 participants overall (mean age 67 years) and 3004 participants who were depression-free at baseline. Measurements Baseline tea consumption which include Chinese (black, oolong or green) tea or Western (mixed with milk) tea and change in Geriatric Depression Scale (GDS) measure of depression. Incident depression was defined by GDS≥5, and GDS depression improvement or deterioration by GDS change of ≥4 points. Estimated odds ratio and 95% confidence intervals (OR, 95%CI) were adjusted for baseline age, sex, ethnicity, education, housing type, single/divorced/widowed, living alone, physical and social activity, smoking, alcohol, number of comorbidities, MMSE, and baseline GDS level. Results Compared to non-tea drinkers, participants who consumed ≥3 cups of tea of all kinds were significantly less likely to have worsened GDS symptoms: OR=0.32, 95% CI=0.12, 0.84. Among baseline depression-free participants, the risk of incident GDS (≥5) depression was significantly lower (OR=0.34, 95%CI=0.13, 0.90) for daily consumption of all types of tea, and Chinese (black, oolong or green) tea (OR=0.46, 95%CI=0.21,0.99). Conclusion This study suggests that tea may prevent the worsening of existing depressive symptoms and the reduce the likelihood of developing threshold depression.
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ISSN:1279-7707
1760-4788
DOI:10.1007/s12603-020-1526-x